6X4S:
reference: Structure and Reconstitution of a MCU-EMRE Mitochondrial Ca(2+) Uniporter Complex., Wang C, Baradaran R, Long SB, J Mol Biol. 2020 Aug 22. pii: S0022-2836(20)30507-6. doi:, 10.1016/j.jmb.2020.08.013. PMID: 32841658

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).